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/*
 * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer;
 * redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution;
 * neither the name of the copyright holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * $Id$
 */

#ifndef __MEM_RUBY_DEBUG_HH__
#define __MEM_RUBY_DEBUG_HH__

#include <unistd.h>

#include <fstream>
#include <iostream>
#include <string>
#include <vector>

#include "config/ruby_debug.hh"
#include "mem/ruby/common/Global.hh"
#include "sim/sim_object.hh"

#include "params/RubyDebug.hh"

extern std::ostream * debug_cout_ptr;

// component enumeration
enum DebugComponents
{
    SYSTEM_COMP,
    NODE_COMP,
    QUEUE_COMP,
    EVENTQUEUE_COMP,
    NETWORK_COMP,
    SEQUENCER_COMP,
    TESTER_COMP,
    GENERATED_COMP,
    SLICC_COMP,
    NETWORKQUEUE_COMP,
    TIME_COMP,
    NETWORK_INTERNALS_COMP,
    STOREBUFFER_COMP,
    CACHE_COMP,
    PREDICTOR_COMP,
    ALLOCATOR_COMP,
    MEMORY_COMP,
    NUMBER_OF_COMPS
};

enum PriorityLevel {HighPrio, MedPrio, LowPrio};
enum VerbosityLevel {No_Verb, Low_Verb, Med_Verb, High_Verb};

class Debug : public SimObject {
public:
  // Constructors
    typedef RubyDebugParams Params;
  Debug(const Params *p);

  // Destructor
  ~Debug();

  // Public Methods
  static bool getProtocolTrace() { return m_protocol_trace; }
  bool validDebug(int module, PriorityLevel priority);
  void printVerbosity(std::ostream& out) const;
  void setVerbosity(VerbosityLevel vb);
  static bool checkVerbosityString(const char *verb_str);
  bool setVerbosityString(const char *);
  VerbosityLevel getVerbosity() const { return m_verbosityLevel; }
  void setFilter(int);
  static bool checkFilter( char);
  static bool checkFilterString(const char *);
  bool setFilterString(const char *);
  void setDebugTime(Time);
  Time getDebugTime() const { return m_starting_cycle; }
  bool addFilter(char);
  void clearFilter();
  void allFilter();
  void print(std::ostream& out) const;
  /* old school debugging "vararg": sends messages to screen and log */
  void debugMsg( const char *fmt, ... );

  void setDebugOutputFile (const char * filename);
  void closeDebugOutputFile ();
  static void usageInstructions(void);

private:
  // Private Methods

  // Private copy constructor and assignment operator
  Debug(const Debug& obj);
  Debug& operator=(const Debug& obj);

  // Data Members (m_ prefix)
  static bool m_protocol_trace;
  VerbosityLevel m_verbosityLevel;
  int m_filter;
  Time m_starting_cycle;

  std::fstream m_fout;
};

// Output operator declaration
std::ostream& operator<<(std::ostream& out, const Debug& obj);

// ******************* Definitions *******************

// Output operator definition
extern inline
std::ostream& operator<<(std::ostream& out, const Debug& obj)
{
  obj.print(out);
  out << std::flush;
  return out;
}

const bool ERROR_MESSAGE_FLAG = true;
const bool WARNING_MESSAGE_FLAG = true;

#ifdef RUBY_NO_ASSERT
const bool ASSERT_FLAG = false;
#else
const bool ASSERT_FLAG = true;
#endif

#undef assert
#define assert(EXPR) ASSERT(EXPR)
#undef ASSERT
#define ASSERT(EXPR)\
{\
  using namespace std;\
  if (ASSERT_FLAG) {\
    if (!(EXPR)) {\
      cerr << "failed assertion '"\
           << #EXPR << "' at fn "\
           << __PRETTY_FUNCTION__ << " in "\
           << __FILE__ << ":"\
           << __LINE__ << endl << flush;\
      (* debug_cout_ptr) << "failed assertion '"\
           << #EXPR << "' at fn "\
           << __PRETTY_FUNCTION__ << " in "\
           << __FILE__ << ":"\
           << __LINE__ << endl << flush;\
      if(isatty(STDIN_FILENO)) {\
        cerr << "At this point you might want to attach a debug to ";\
        cerr << "the running and get to the" << endl;\
        cerr << "crash site; otherwise press enter to continue" << endl;\
        cerr << "PID: " << getpid();\
        cerr << endl << flush; \
        char c; \
        cin.get(c); \
      }\
      abort();\
    }\
  }\
}

#define BREAK(X)\
{\
    using namespace std;\
    cerr << "breakpoint '"\
         << #X << "' reached at fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << endl << flush;\
    if(isatty(STDIN_FILENO)) {\
      cerr << "press enter to continue" << endl;\
      cerr << "PID: " << getpid();\
      cerr << endl << flush; \
      char c; \
      cin.get(c); \
    }\
}

#define ERROR_MSG(MESSAGE)\
{\
  using namespace std;\
  if (ERROR_MESSAGE_FLAG) {\
    cerr << "Fatal Error: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": "\
         << (MESSAGE) << endl << flush;\
    (* debug_cout_ptr) << "Fatal Error: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": "\
         << (MESSAGE) << endl << flush;\
    abort();\
  }\
}

#define WARN_MSG(MESSAGE)\
{\
  using namespace std;\
  if (WARNING_MESSAGE_FLAG) {\
    cerr << "Warning: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": "\
         << (MESSAGE) << endl << flush;\
    (* debug_cout_ptr) << "Warning: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": "\
         << (MESSAGE) << endl << flush;\
  }\
}

#define WARN_EXPR(EXPR)\
{\
  using namespace std;\
  if (WARNING_MESSAGE_FLAG) {\
    cerr << "Warning: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": "\
         << #EXPR << " is "\
         << (EXPR) << endl << flush;\
    (* debug_cout_ptr) << "Warning: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": "\
         << #EXPR << " is "\
         << (EXPR) << endl << flush;\
  }\
}

#define DEBUG_MSG(module, priority, MESSAGE)\
{\
  using namespace std;\
  if (RUBY_DEBUG) {\
    if (g_debug_ptr->validDebug(module, priority)) {\
      (* debug_cout_ptr) << "Debug: in fn "\
           << __PRETTY_FUNCTION__\
           << " in " << __FILE__ << ":"\
           << __LINE__ << ": "\
           << (MESSAGE) << endl << flush;\
    }\
  }\
}

#define DEBUG_EXPR(module, priority, EXPR)\
{\
  using namespace std;\
  if (RUBY_DEBUG) {\
    if (g_debug_ptr->validDebug(module, priority)) {\
      (* debug_cout_ptr) << "Debug: in fn "\
           << __PRETTY_FUNCTION__\
           << " in " << __FILE__ << ":"\
           << __LINE__ << ": "\
           << #EXPR << " is "\
           << (EXPR) << endl << flush;\
    }\
  }\
}

#define DEBUG_NEWLINE(module, priority)\
{\
  using namespace std;\
  if (RUBY_DEBUG) {\
    if (g_debug_ptr->validDebug(module, priority)) {\
      (* debug_cout_ptr) << endl << flush;\
    }\
  }\
}

#define DEBUG_SLICC(priority, LINE, MESSAGE)\
{\
  using namespace std;\
  if (RUBY_DEBUG) {\
    if (g_debug_ptr->validDebug(SLICC_COMP, priority)) {\
      (* debug_cout_ptr) << (LINE) << (MESSAGE) << endl << flush;\
    }\
  }\
}

#define DEBUG_OUT( rest... ) \
{\
  using namespace std;\
  if (RUBY_DEBUG) {\
    cout << "Debug: in fn "\
         << __PRETTY_FUNCTION__\
         << " in " << __FILE__ << ":"\
         << __LINE__ << ": "; \
    g_debug_ptr->debugMsg(rest); \
  }\
}

#define ERROR_OUT( rest... ) \
{\
  using namespace std;\
  if (ERROR_MESSAGE_FLAG) {\
    cout << "error: in fn "\
         << __PRETTY_FUNCTION__ << " in "\
         << __FILE__ << ":"\
         << __LINE__ << ": ";\
    g_debug_ptr->debugMsg(rest); \
  }\
}

#endif //DEBUG_H